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2017 ; 96
(29
): e7605
Nephropedia Template TP
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Continuous use of metformin can improve survival in type 2 diabetic patients with
ovarian cancer: A retrospective study
#MMPMID28723808
Wang SB
; Lei KJ
; Liu JP
; Jia YM
Medicine (Baltimore)
2017[Jul]; 96
(29
): e7605
PMID28723808
show ga
Evidence indicates that type 2 diabetes may stimulate the initiation and
progression of several types of cancer. Metformin, a drug most commonly used to
treat type 2 diabetes, may inhibit cancer cell growth and reduce the risk of
cancer. However, evidence of the antitumor effects of metformin on ovarian cancer
is still limited.In this study, we retrospectively examined the effects of
metformin on ovarian cancer patients with diabetes at our institution.We
identified 568 consecutive patients who were newly diagnosed with ovarian cancer
and treated between January 2011 and March 2014. Patients with International
Federation of Gynecology and Obstetrics (FIGO) stage I to IV epithelial ovarian,
fallopian, or peritoneal cancer were included. Patients with type 1 diabetes,
incomplete records (including medication records) and any other cancer before
their ovarian cancer diagnosis, as well as those diagnosed with diabetes more
than 6 months after their ovarian cancer diagnosis, were excluded. Out of 568
patients, 48 (8.5%) patients with type 2 diabetes continuously used metformin, 34
(5.9%) patients with type 2 diabetes did not take metformin, 22 (3.9%) patients
with type 2 diabetes discontinued metformin, and 464 (81.7%) ovarian cancer
patients were nondiabetic controls. Longer progression-free survival (PFS) and
overall survival (OS) were observed in ovarian cancer patients with diabetes who
were taking metformin than in diabetic patients not taking metformin, diabetic
patients who discontinued metformin, and nondiabetic ovarian cancer patients
(P?=?.001). After adjusting for possible confounders, metformin use was
associated with a lower risk for disease relapse [hazard ratio (HR)?=?0.34; 95%
confidence interval (CI): 0.27-0.67; P?.01] and disease-related death
(HR?=?0.29; 95% CI: 0.13-0.58, P?=?.03) among ovarian cancer patients with
diabetes.Metformin use may decrease the risk for disease recurrence and death in
patients with ovarian cancer, but the drug treatment must be continuous.
|Antineoplastic Agents/therapeutic use
[MESH]
|Diabetes Mellitus, Type 2/*complications/*drug therapy
[MESH]